Improvement in primers for cartridges



E. GAUPILLAT.

PRIMERS F011 CARTRIDGES.

No.1746z5- Patented March 14, 18,76.

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UNITED STATES PATENT OFFICE.

ERNEST GAUPILLAI, OF PARIS, FRANCE.

IMPROVEMENT IN PRIMERS FOR CARTRIDGES.

Specification forming part of Letters Patent No. 174,625, dated March 14, 1876; application filed November 22, 1875.

To all whom it may concern Be it known that I, ERNEST GAUPILLAT, of' Paris, France, have invented -certain Improvements Relating to Primers for Cartridges, of which the following is a specification:

This is the same as was set forth in my addition of' August 8, 1870. The invention is practicable for all styles of center-lire cartridges.

I confine a percussion capsule and an anvil firmly Within an inclosing lianged cup, and compress inward the inclosing-cup so as to firmly retain the contents.

Myinvention avoids the inconvenience, and sometimes serious mischief, which results from the separation of the parts in the act of firing, or at other times.

The following is a description of' what I consider the best means of' carrying out the invention:

The accompanying drawings form a part of this specification.

Figure 1. is a section through the exterior cup, in the form in which it is readily procurable in the trade. Figs. 2, 3, and 4 represent one series of changes to which I subject it. Figs. 5 and 6 represent another series of changes. Fig. 7 represents a different form of' the original capsule. Figs. 8, 9, 10, and ll represent the successful changes of' form and condition t0 which VI subject this. Figs. 4, 6, and 1l represent the finished articles which result from the several modifications of the treatment. They differ from each other in some points; but they each have the novel features and qualities of my invention, and I esteem them each practicable and useful forms of my invention.

Similar letters of' reference indicate corresponding parts in all the figures.

Referring to Figs. 1, 2, 3, and 4, Fig. l represents the material for the exteriorcup, simply struck into an ordinary cylindrical form. it has been Wrought by one or more operations into a different form, B representing one of' the principal means emplyed in the operation. It will be understood that one or more holes' are produced in the closed end of this cup. In Fig. 3, A represents a ixed plate or bed, in which the cup is supported after being properly supplied with the anvil g and capsule d d1, Fig. 2, represent the same after f, which are omitted in the figure, and (l is a forming-die, having a concave lower face, adapted to incline inward the upper edges d2, as indicated in dotted lines.

One more operation, holding it in the same or a similar holder, A,and subjecting it to the action of a flat-faced die, produces the finished forni shown in Fig. 4, in which d1 represents an external flange to aid in holding the primer in place in the cartridge, and d2 an internal flange, which firmly holds the contents within the primer.

The com plete primer thus produced is ready to be inserted and held in the ordinary or any suitable manner in any ofthe various forms of cartridges.

Figs. 5 and 6 represent a modification. Fig. 5 represents the external cup d with its upper portion d1 simply flanged outward.

The anvil g and percussion-capsule f being inserted, it is supported in a holder, A, and is subjected to the action of a peculiarly-formed tool, H, which separates any surplus metal from the exterior of' the rim, if there is too much there, and crowds inward the material inclosed within the line of division. It leaves the primer with a suflicient turned-out flange, di, and also with a sufficient drawn-in portion, d2, to serve as an internal flange, and firmly retain the capsulef and anvil g.

Referring to Figs. 7, 8, 9, 10, and 11Which show another modification, Fig. 7 represents the exterior cup al as formed With its closed end semi-spherical instead of flat. Fig. 8 represents the same after having been partially upset in suitable dies, flattening and enlarging the inclosed end. Fig. 9 represents the same after the treatment has been carried still further, producing thin flanges, differing in position and mode of manufacture from the anges or external projections d1 d2 in the preceding igures, but corresponding in function therewith-that is to say, it is the external flange Which aids to hold the primer in position iny the cartridge. Fig. 10 shows the same cup with a considerable openin g punched in the center of its closed end, to allow the point of the firing-hammer or firing-pin (not represented) to strike freely through, and impinge directly upon the center of the inclosed percussion-capsnlef. Into a cup, d d1,tl1us prepared, is placed lrhe percussion-capsule f, with its open end upward. Into the interior oi' thelatter is next placed the anvil g, with its point downward, and then the Whole being properly held is subjected to compression by a punch corresponding; in form to C, Fig. 3, which draws inward the upper edge of the exterior cup d, and thus clinehes it by forming an internal Bange, dz, adapted to retain the percussion-capsule and the anvil.

Many other modifications may be made in the forms by any good mechanic without departing,r entirely from the principles of 'the invention.

l Although I have only referred to cartridges, my improved primer may be useful in the fuses of projectiles, and iu any position Where a percussion-cap, closed or nearly closed at both ends, can be made available. I can close the joints in my primer by shellac or other ordinary means, and thus make it waterproof when desired.

I claim as my invention- The exterior cup d d1 d2, in combination with an inolosed percussion-capsule, f, and anvil g, the part d2 serving as an internal ange to retain the contents of the primer, and the part ell serving as an external flange to aid in holding the primer in place, as herein set forth.

In testimony whereof I have hereunto set my hand this 12th day of May, 1875, in the presence oi' two subscribing Witnesses.

E. GAUPILLAT.

Witnesses:

B. B. Horemcrs's, TH. FAVARGER. 

